Heath Ledger's Diary From 'The Dark Knight' Shows How Deep He Was Into the Role of the Joker

Heath Ledger’s unbelievable performance as the Joker in The Dark Knight was legendary, but it didn’t come easily. His diary shows how invested he was into portraying the iconic figure and what steps he took to make it his own.
Ledger’s father revealed the diary in a German documentary called Too Young To Die. Eerily enough, the last page of the diary had the words BYE BYE written across the page in a tragic omen of what was to come.
You can watch the diary segment from the documentary here: